The Carrier HK61EA002 Fan Coil Control Board is an electronic control module designed to regulate fan coil unit operations in HVAC systems. It manages key functions such as fan speed, temperature control, and system communication by processing input signals from thermostats and sensors. Commonly used in air handlers and fan coil units for residential and commercial applications, it ensures efficient airflow and consistent climate control. This control board enhances system performance, supports energy efficiency, reduces operational issues, and contributes to reliable and precise HVAC system functionality.